We appreciate your help in testing this pre-release!
+If a file from an earlier version of LyX is opened *and saved* with
+any version of 2.3.x, then the original file will automatically be
+backed up. The backup file will be found in the backup directory, if one
+is set under Tools> Preferences> Paths, or else in the same folder as
+the original file, if no backup directory is set. The filename of the
+backup file will be:
+ ORIGNAME-lyxformat-NUM.lyx~
+where NUM is the LyX format number of the original file. In the case of
+2.2.x file, this will be 508, but in the case of older files it will be
+different.
+
The file lib/RELEASE-NOTES lists some known issues and problems compared
to the current stable releases (LyX 2.2.x). We strongly recommend that
packagers of LyX on various platforms and distributions read this file.
As with any major release, this one comes with a lot of new features but
also some bugs. If you think you have found a bug in LyX 2.3.0beta1, either
email the LyX developers' mailing list (lyx-devel at lists.lyx.org),
-or open a bug report at http://www.lyx.org/trac/wiki/BugTrackerHome.
+or open a bug report at https://www.lyx.org/trac/wiki/BugTrackerHome.
Please specify if the behavior you are reporting is different from behavior
in a previous LyX version.
If you have trouble using LyX or have a question, consult the
documentation that comes with LyX (under Help) and the LyX wiki, which you
-will find at http://wiki.lyx.org/. You can also send email to the LyX users'
+will find at https://wiki.lyx.org/. You can also send email to the LyX users'
list (lyx-users at lists.lyx.org).
The LyX team.
-http://www.lyx.org
+https://www.lyx.org